Hard Drive,Cable Length, Controller Card

The length of the IDE data bus can be increased or decreased it all depends on the type of bus u use. For example in the olden days when the machines are AT, XT or the old servers u take the length is almost double. But the problem is that the data transfer will be effected , i mean the accessing speed will be less.With the decrease in the length and the hard drive speeds going on increasing the accessing speed has a lot of effect.